Cellular respiration harvests the most chemical energy from which of the following?

A) substrate-level phosphorylation
B) chemiosmotic phosphorylation
C) converting oxygen to ATP
D) transferring electrons from organic molecules to pyruvate
E) generating carbon dioxide and oxygen in the electron transport chain


Ans: B) chemiosmotic phosphorylation

Biology & Microbiology

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Which of the following are examples of systemic infections, or those that spread to several sites and tissues, usually in the bloodstream?

a. AIDS b. A wart c. An infected cut d. A boil e. Typhoid fever

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A high concentration of H+ in the thylakoid compartment provides potential energy for the ____ by ____.

A. breakdown of water; oxidation B. production of ATP; ATP synthases C. reduction of NADP+; an electron transfer chain D. production of sugars; the light-independent reactions E. production of O2; photolysis

Biology & Microbiology

Movement of a cell toward a chemical stimulus is termed ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which color changes represent a positive reaction for the presence of protein using the biuret test

a. purple to blue b. yellow to green c. blue to purple d. green to red e. blue to brown-red

Biology & Microbiology